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<p><span>a  b</span></p>
<p><span>a&#xA;b</span></p>
<p><span>a &#xA; b</span></p>
<p><span>&#xA;  a&#xA;  b&#xA;</span></p>
<p><span>a  </span></p>
<p><span>&#xA;&#xA;&#xA;</span></p>
<p><span>  &#xA;&#xA;&#xA;  </span></p>
<p><span>. &#xA;</span></p>
<p><span>a&#x9;b</span></p>
<p><span>a &#x9; b</span></p>
<p><span>&#x9;  a&#x9;  b&#x9;</span></p>
<p><span>a  </span></p>
<p><span>&#x9;&#x9;&#x9;</span></p>
<p><span>  &#x9;&#x9;&#x9;  </span></p>
<p><span>. &#x9;</span></p>
